The Apostolic Vicariate of Brunei Darussalam is a Roman Catholic ecclesiastical jurisdiction covering the territory of Brunei Darussalam, a small nation state on the northern coast of Borneo. The vicariate is headed by an apostolic vicar, currently Bishop Cornelius Sim.
The separation of Bruneian territory formerly under the Diocese of Miri-Brunei (now simply known as the Diocese of Miri) created a distinct Bruneian Church. This separated territory was designated as an apostolic prefecture in November 1997, to be headed by then Msgr. Cornelius Sim (who was the Vicar General of Miri-Brunei, and a Bruneian priest) as its first apostolic prefect. On 22 February 1998, the Apostolic Prefecture of Brunei Darussalam came into being with the proclamation of the papal bull to the faithful and the installation of the apostolic prefect. On 20 October 2004, less than seven years after it was formed, the apostolic prefecture was elevated to an apostolic vicariate. Msgr. Sim was privileged to be chosen to continue leading the territory as its first apostolic vicar, carrying the dignity of a titular bishop. The official celebrations and episcopal ordination took place in January 2005.
There is no official priests' council, although the clergy do hold meetings occasionally.
The vicariate is administered pastorally through commissions responsible for liturgy, catechetics, finance, education, the youth, evangelisation, family life, migrant welfare, the Bible apostolate and social communications. The commissions are directed by appointed clergy, and see representation from the parishes. The role of these commissions are to foster a more aligned vision and direction among the parishes in the various aspects of Church life.
The vicariate consists of 3 parishes, all located in major towns. The parishes are:
There is also a sizeable Catholic community in the remote district of Temburong, although there is as yet no parish established there.
The faithful are ministered to by a Mill Hill missionary and 3 diocesan priests, which includes the bishop, himself a parish priest.
The Society of St Vincent de Paul is also active in 2 parishes of the vicariate, where they gather monetary and physical aid and distribute to those in need.
The schools are not subsidised or aided by the government, and thus run on a full fee-paying basis.
As the government does not allow catechism lessons during school hours or within school premises, Sunday (and Friday) School is conducted to nurture young Catholics in the faith.